EW has learned exclusively that Mark-Paul Gosselaar has been cast as Max’s “new mysterious roommate” named Chase on ABC’s Happy Endings. Gosselaar, who also appears on TNT’s recently renewedFranklin & Bash, will guest in episode 10 of the new season, which returns for a new season tomorrow.

Those especially eager to see the former Zack Morris on the network can also watch tomorrow’s season premiere of Don’t Trust the B—- in Apt. 23, in which the Saved By the Bell-er will be playing himself, as EW previously reported exclusively.